Crystal Springs Winter Trail Run
Woodside, CA, USA · January 17, 2027
Race Day Weather
45°at start
58° high
Calm
Dry
Cool start — fast day potential, warming through the race
A cool 45°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temperatures rising to 58°F through the course will gradually increase perceived effort in the second half.
Race day forecast available in 91 days
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Race weekend
Sunday, January 17
50K (31.1 mi)
Marathon (26.2 mi)
35K (21.7 mi)
Half Marathon (13.1 mi)
8K (5.0 mi)
Historical Weather
Based on 4 years of data
Avg Temp
55°F
L:50° H:59°
RunScore
Conditions
Rain Freq
25%
1 of 4 yrs
Wind4mph
Dew44°F
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2026 | | 47°/61° | - | 47° | |
2025 |  | 51°/62° | - | 30° | |
2024 | | 51°/57° | - | 49° | |
2023 |  | 52°/54° | Light | 49° |
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